Answers

The four D&S GP38-2s (not GP38s), labeled as "Bull Durham" #1-4, are
now CSX #2556-2559.

I haven't seen any of these for at least 2-3 years. I believe the
last time one was seen was on CSX unit auto rack train Q214 with CSX
GP38-2 #2558 on the point! This train was seen at the CSX/NS
diamond/crossing at Crawford,FL on the CSX Callahan Subdivision (then
part of the Jacksonville Service Lane).